12646652899 has 2 divisors, whose sum is σ = 12646652900. Its totient is φ = 12646652898.

The previous prime is 12646652881. The next prime is 12646652917. The reversal of 12646652899 is 99825664621.

It is a balanced prime because it is at equal distance from previous prime (12646652881) and next prime (12646652917).

It is an emirp because it is prime and its reverse (99825664621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12646652899 - 2⁵ = 12646652867 is a prime.

It is not a weakly prime, because it can be changed into another prime (12646652839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6323326449 + 6323326450.

It is an arithmetic number, because the mean of its divisors is an integer number (6323326450).

Almost surely, 2^12646652899 is an apocalyptic number.

12646652899 is a deficient number, since it is larger than the sum of its proper divisors (1).

12646652899 is an equidigital number, since it uses as much as digits as its factorization.

12646652899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11197440, while the sum is 58.

The spelling of 12646652899 in words is "twelve billion, six hundred forty-six million, six hundred fifty-two thousand, eight hundred ninety-nine".